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Input–output analysis of macroelements in ICP-IM catchment area, Estonia
AbstractUsing bulk deposition, throughfall, stemflow, soil infiltration, runoff water, litterfall data, ion mass budgets were calculated for a catchment area and for mature spruce and pine stands on it. The ions considered in mass balances were Na+, K+, Ca2+, Mg2+, SO42−, NO3−, NH4+, HCO3−, and H+. Corresponding fluxes for the budgets were calculated as an average for 6 years of studies (1995–2000). Annual input–output balances of all nutrients were positive at the plot-scale, so that leaching into soil water was less than the corresponding deposition load. Deposition of Ca, Mg, Na and S into soil by precipitation exceeded input through litterfall. A proton budget approach shows that the main soil buffering process is retention of sulphate, which clearly exceeds weathering. At the catchment-scale, input–output analysis shows essential output of cations due to weathering from the soil. A distinct change in input–output balance of sulphate during study period was evident. The retention of sulphur has been replaced by its release from the catchment area.
Input–output analysis of macroelements in ICP-IM catchment area, Estonia
AbstractUsing bulk deposition, throughfall, stemflow, soil infiltration, runoff water, litterfall data, ion mass budgets were calculated for a catchment area and for mature spruce and pine stands on it. The ions considered in mass balances were Na+, K+, Ca2+, Mg2+, SO42−, NO3−, NH4+, HCO3−, and H+. Corresponding fluxes for the budgets were calculated as an average for 6 years of studies (1995–2000). Annual input–output balances of all nutrients were positive at the plot-scale, so that leaching into soil water was less than the corresponding deposition load. Deposition of Ca, Mg, Na and S into soil by precipitation exceeded input through litterfall. A proton budget approach shows that the main soil buffering process is retention of sulphate, which clearly exceeds weathering. At the catchment-scale, input–output analysis shows essential output of cations due to weathering from the soil. A distinct change in input–output balance of sulphate during study period was evident. The retention of sulphur has been replaced by its release from the catchment area.
Input–output analysis of macroelements in ICP-IM catchment area, Estonia
Frey, Jane (author) / Frey, Toomas (author) / Pajuste, Katrin (author)
Landscape and Urban Planning ; 67 ; 217-223
2003-01-01
7 pages
Article (Journal)
Electronic Resource
English
Conifer , Catchment , Deposition , Runoff , Soil water
Input-output analysis of macroelements in ICP-IM catchment area, Estonia
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